How to use make_decorator method in Nose

Best Python code snippet using nose

test_decorators.py

Source:test_decorators.py

...183        # performed in the above order for each decorator, but we should184        # iterate through the decorators in the reverse of the order they185        # appear in the source.186        actions = []187        def make_decorator(tag):188            actions.append('makedec' + tag)189            def decorate(func):190                actions.append('calldec' + tag)191                return func192            return decorate193        class NameLookupTracer (object):194            def __init__(self, index):195                self.index = index196            def __getattr__(self, fname):197                if fname == 'make_decorator':198                    opname, res = ('evalname', make_decorator)199                elif fname == 'arg':200                    opname, res = ('evalargs', str(self.index))201                else:202                    assert False, "Unknown attrname %s" % fname203                actions.append('%s%d' % (opname, self.index))204                return res205        c1, c2, c3 = map(NameLookupTracer, [ 1, 2, 3 ])206        expected_actions = [ 'evalname1', 'evalargs1', 'makedec1',207                             'evalname2', 'evalargs2', 'makedec2',208                             'evalname3', 'evalargs3', 'makedec3',209                             'calldec3', 'calldec2', 'calldec1' ]210        actions = []211        @c1.make_decorator(c1.arg)212        @c2.make_decorator(c2.arg)213        @c3.make_decorator(c3.arg)214        def foo(): return 42215        self.assertEqual(foo(), 42)216        self.assertEqual(actions, expected_actions)217        # Test the equivalence claim in chapter 7 of the reference manual.218        #219        actions = []220        def bar(): return 42221        bar = c1.make_decorator(c1.arg)(c2.make_decorator(c2.arg)(c3.make_decorator(c3.arg)(bar)))222        self.assertEqual(bar(), 42)223        self.assertEqual(actions, expected_actions)224class TestClassDecorators(unittest.TestCase):225    def test_simple(self):226        def plain(x):227            x.extra = 'Hello'228            return x229        @plain230        class C(object): pass231        self.assertEqual(C.extra, 'Hello')232    def test_double(self):233        def ten(x):234            x.extra = 10235            return x...

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